Stove.



No. 870,686- PATENTED NOV. 12, 1907- J. L. REID. v

STOVE.

APPLICATION rum) KAB..16,190B.

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P PE a J. L. REID.

STOVE APPLICATION FILED EAR. 16,1905.

PATENT OFFICE.

JOHN L. REID, OF CHICAGO, ILLINOIS.

STOVE Specification of Letters Patent.

Patented Nov. 12, 1907.

Application filed March 16.1906. Serial No. 306382.

To all whom it may concern:

Be itknown that I, JOHN L. REID, a citizen of the United States, residing at 3954 Indiana avenue, Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Stoves, of which the following is a specification.

My invention relates to stoves and has for its object to provide new and improved constructions in devices of that character. I

More particularly the invention has for its object to provide new constructions in the fuel grate, combustion chamber and heating flues so as to obtain greaterheating capacity.

The invention has for its object further to provide a hot blast device so arranged that it may or may not be used as circumstances demand, and to provide such other new and improved constructions as set forth in this specification.

The invention is illustrated in the accompanying drawings, wherein Figure 1 is a vertical section through a stove con structed in, accordance with my invention; Fig. 2, a

cross section on line 22 of Fig. 1; Fig. 3, a detail cross section on line 33 of Fig. 2; Fig. 4, an elevation of one of the heating, fiues viewed from the interior of the stove; Fig. 5, an elevation of the same viewed from the other side; Fig. 6, a vertical section on line 66 of Fig. 5, and Fig. 7, a cross section on line 7-7 of Fig. 5.

Like letters of reference indicate like parts in all the drawings.

The elements forming the stove are built upon a base plateA supported on the legs A This plate forms the bottom of the ash-pit and has the circular rib A and the ring A which may be provided with an ornamental ring A*. The ring A has preferably the upstanding flange A and a plurality of apertures A.

Seated against the rib A is a casting B formed with the lips B B and the inwardly extending horizontal part B preferably provided with the flange B", Associated with the casting B is a door 0 of any ordinary construction. Resting on the inner lip 13 is a ring D. The grate E ispivoted to this ring, the ring being provided at the back with a bearing 1) for the gudgeon E on the grate, the front side being apertured at D to receive the gudgeon E on the grate, the latter being squared at its outer end E so as to provide a means for dumping. A lug D on the ring supports the grate on one side. To a pin D on the bottom of the grate is pivoted a shaking bar D having a hand grip D at its outer end. The door G has an aperture (J opposite the squared end. E of the gudgeon E and this aperture is closed by a slide 0 The grate is preferably conical in form as shown, and is made solid through the greater part of its extent instead of being perforated as in the case of most grates. The termsfgrate is perhaps not strictly applicable to this device, although I use it because it is the term ordinarily employed to designate the part supporting the fuel. The grate E has preferably the perforations E near its base or outer circumference and is also preferably provided with the peripheral ventilations E Seated on the ring A outside of the upstanding flange A at the back and sides of the stove and on the part B at the front of the stove is a sheet metal casing F. The firebox is formed within this casing.

In constructing the fire-box I have'had several objects in view. Among these is to provide means for drawing the flame to the outer portion of the fire-box and this I accomplish by making it with a series of vertical air feeding ducts opening into the fire-box from the bottom, thus providing an oxygen supply which will be peripheral rather than through the entire extent or through the central part of the grate as is usually the case. As has been said, I prefer to make the center part of the grate E solid, although it may not be necessary under all circumstances that there should be no supply of air at all at the central part of the fire-box. The conical form of the grate reduces the bulk of the fire at the center part of the fire-box. Another object is to provide heating fiues with their walls in close proximity to the fuel and hot gases of the fire-box and through which air may be conducted so as to be heated.

The means which I prefer to employ with the above objects in view, consists in the use of a number of flue elements or sections which are arranged within the casing F and-constitute the inner wall of the fire-box with its air feeding ducts and also the several heating flues. One of these flue sections or elements is illustrated in detail in Figs. 4 to 7 inclusive. it consists of a box like structure G open at the front and formed of the side piece G G having flanges G: G and the preferably fluted back piece G The side pieces are cut away on an angle at the bottom as shown at G G. It is open at the bottom and closed at the top by the part G5 provided with the vertical rim G and the curved flange G The lower end of the back part has the diminished rim G Lugs G G" extend from the flanges G2 G near the top. These flue sections or elements are arranged vertically around the fire-box, the rims G extending into the annular channel formed between the lips 13 .B of the casting B. They are arranged with the open side outward, the lugs G G resting on the top of the casing F, the flanges G of adjacent sections abutting. These flanges are preferably tapering. It will, therefore, be seen that there will be formed a combustion chamber with a number of ducts H H open at the bottom and tapering from the top and let into the containing wall of the chamber; and outside of this chamber a number of air heating passages or flucs .I between the ducts H II, these flucs running along the side of the combustion chamber. The air from the room will enter these flucs throughithegapertures A and will pass out through the opening J above the casing F. The flues .l are inclosed on three sides by walls into contact with which come the hot gases of the combustion chamber.

The upper part of the stove body consists of a ring K preferably of sheet metal, which rests upon the flanges G of the flue elements G, and which has the fuel door K. An ornamental ring or flange K may be secured to these flanges G so as to cover the aper ture .1 The stove is closed at the top by a cover L, the flange L of which rests on the casing K. There may also be an ornamental ring L secured to the flange L. A smoke pipe L leads from the top of the stove. All of the parts forming the body of the stove are designed to be held together by the bolted rods M. Three of these are shown in the drawings.

I have also provided a hot blast device which is suitable for use in connection with the elements of the stove which I have already described. .This part of the invention is not in all cases necessary to the proper operation of the stove and may be omitted. It contemplates in particular the combustion oi the gases which are distilled from the coal when the fire is comparatively new. Some of these gases will in any event be burned, but under ordinary conditions they will to a; large extent escape up the chimney and be wasted. In carrying out this part of my invention I provide the upper part of the stove with a pipe N which communicates with an aperture bl in the top of the cover part L and near the lower end communicates with an elbow N from one of the heating flues J. The pipe N is preferably diminished at the joint with the el- -boW N as indicated at N and has the flaring part N below this to which is secured a removable ring N the part N having the slot N and the part N the pin N extending into this slot. The purpose of making this month portion of the pipe in two sections is to permit the renewal of the lower part when it has burned away or become injured by the action of the heat. The contracted part N of the pipe N forms a valve chamber ior a double seat valve consisting of a rod 0, to which is secured the disks 0, O The upper end of the rod has the crank O which when turned will ride up upon the cam O notched at 0". When the fire is new, the valve will be in the lower position as shown in Fig. 1, and a blast of hot will, therefore, be directed from one of the fines J down upon the bed of coals. The oxygen in the air will, of course, unite with the carbon freed from the coal.

I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described for obvious modifications will occur to any person skilled in the art.

The use and operation of my device are as follows: The fire will be built upon the grate E in the ordinary manner. It will be seen from the constructions set forth that themost active combustion will take place around the outer part of the fire-box or combustion chamber. This results from the fact that the air reaches the combustion chamber from the sides. Air from the room enters the stove near the floor through the aperture A and passes up along the side of the firebox through the several heating flues J where it is confined between the three radiating surfaces G G and G all of these surfaces being directly acted upon by the products of combustion in the fire-box. The fire may be dumped in the ordinary way by turning the conical grate within its supporting ring and it may be shaken by means of the shaking bar D which is attached to the ring. I

When the stove is provided with the hot blast device, this will ordinarily be operated only when the fire is new or retueled. At other times the valves 0 0 will be raised.

The air blast valve, it will be seen, is a double seat valve. lVhen the lower disk closes the way into the combustion chamber the upper disk is raised to permit the air to pass up through the top of the stove. In this way the circulation of air through the pipe N is always maintained. If this were not so there would be danger of this pipe burning through at this point.- The inside channels in the fire box casing open below the grate and proceed continuously. to a point above the fire. Their object is to lead the air up along the outside of the mass of burning fuel. The outside channels lead the air from below to above the fire, receiving and discharging it into the air of the surrounding chamber or room. When the two are combined in one structure the appearance is somewhat similar to what might be produced by a corrugated sheet metal fire pot.

I claim:

1. In a stove, the combination of a grate with a surrounding fire box casing having inside and outside vertical channels, the inside channels extending to the lower outside rim of the grate and to a point above the fire and Within the stove, and the outside channels opening above and below the fire into the surrounding chamber or room.

2. In a stove. the combination of a grate closed at the center to exclude air, with a fire box having a recessed wall, the recesses of which are of diminishing width from the bottom to the top and form air feeding channels, said channels communicating with the air below the grate.

3. In a stove, the combination of an inclosing shell, with a grate. a plurality of fire box sections arranged within the shell and around the grate and composing a fire box closed on the side and recessed so as to form air heating lines between the fire box and the outer shell, said sections spaced from one another to form narrow air feeding passages communicating with the fire box at the side and lying between the several air heating flues.

4. In a stove, the combination of an inclosing shell, with a conical grate imperforate except for a series of holes at its edge, a. plurality of fire box sections arranged within the shell and around the grate and composing a fire box closed on the side and recessed so as to form air heating fines between the fire box and the outer shell, said sections spaced from one another to form narrow air feeding passages communicating with the fire box at the side and lying between the several air heating flues.

5. In a stove, the combination of an outer shell with a grate and a plurality of separable vertical fire box sections consisting of box like structures arranged about the grate and within the shell so as to form a fire pot closed at the sides, vertical air feeding channels within the fire pot, said sections spaced from one another to form vertical air fines lying outside of the fire pot and between the air feeding channels. i

6. In a stove, the combination of an outer shell with a grate and a plurality of separable vertical fire box sections consisting of box like structures open at the bottom and along the inside, closed at the top and having spacing fianges along thesides to space them apart, said sections being arranged about the grate and within the shell so as to form a fire pot closed at the sides, vertical air feeding channels within the fire pot and said sections spaced from one another to form vertical air heating fines lying outside or; the fire pot and between the air feeding channels.

7. In a stove, the combination of an outer shell with a grate and a plurality of separable vertical fire box sec tions consistingof box like structures arranged about the grate and within the shell so as to form vertical air feeding channels within the fire pot, .and vertical air tlues lying outside of the fire pot and between the air feeding channels, the outer shell having an opening near the npperends of said fire box sections so that the air heating flues open out of the stove at the top.

8. In a stove, the combination of an outer shell with a ring within said shell forming an air space with the outer shell, a grate mounted on said ring, and a plurality of fire box sections above the ring consisting of box like structures arranged about the grate so as to form vertical air feeding channels within the fire box and vertical air heating lines between the fire box and the outer shell, said flues being in communication with said air space, and the outer shell having an opening at the upper ends of the fire box sections so that the air heating fines open out of the stove at the top.

JOHN L. REID.

Witnesses:

PERCIVAL I-I. TRUMAN, LUCY A. FALKENBERG. 

